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9 November, 10:48

Write a linear function f with f (5) = 7 and f (-2) = 0.

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  1. 9 November, 11:00
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    f (x) = x + 2

    Step-by-step explanation:

    y = f (x)

    f (5) = 7 (5,7)

    f (-2) = 0 (-2,0)

    Slope = (y2-y1) / (x2-x1)

    = (0-7) / (-2-5) = - 7/-7 = 1

    y = x + c

    When x = - 2, y = 0

    0 = - 2 + c

    c = 2

    y = x + 2

    f (x) = x + 2
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